Centrifugal extractor



S. PRESTWICH.

CENTRIFUGAL EXTRACTOH.

APPLICATION FILED NOV. 6, 1919.

Patented May 16, 1922.

2 SHEETS-SHEET I.

[A'VENTOR ,S. PBESTWICH. CENTRIFUGAL EXTRACTOR.

APPLICATION FILED NOV. 6, 19I9.

Patented May 16, 1922.

2 SHEETS-SHEET 2.

1 v VEN TOR A TTORNE Y5.

, extracting operation and is UNITED STATES PATENT OFFICE.

SYDNEY PRESTWICH, OF WILMINGTON, DELAWARE, ASSIGNOR TO AMERICAN LAUNDRY MACHINERY COMPANY, OF NORWOOD, OHIO, A CORPORATION OF OHIO.

CENTBIFUGAL EXTRACTOR.

Specification of Letters Patent.

Patented May 16, 1922.

Application filed November 6, 1919. Serial No. 386,198.

To all whom it may concern:

Be it known that I. SYDNEY Pnns'rwrcn. a citizen of the United States, residing at Vilmington, in the county of New Castle and State of Delaware, have invented certain new and useful Improvements in Centrifugal Extractors, of which the following is a specification.

This invention relates to centrifugal ex-,

and which at thesame time provides for.

separating from each other different lots of goods or articles being extracted.

Further objects of the invention arein part obvious and in part will appear more in detail hereinafter.

In the drawings. which represent one embodiment of the invention. Fig. 1 is a sectional elevation: Fig. 2 is a detail sectional elevation, on a larger scale. through the upper portion of the rotating basket; Fig. 3 is a similar view through the lower portion of the basket; Fig. 4 is a view. partly broken out and in section. illustrating the loading and unloading position; Fig. 5 is a sectional plan view through the basket on the line Fig. 4: and Fig. 6 is a detail view of the basket. manipulating tool.

The machine. shown in the drawings comprises a suitable frame including a hollow curb or casing 1 provided with feet 2 resting upon the floor or ot-her suitable support and also having an upright post or pillar 3 for supporting the driving mechanism. as will appear. This curb or casing incloses and protects the rotating basket during the provided with a relatively large top opening 4: through which the basket may be elevated or manipulated.

In its bottom the curb is provided with a.

prises an outer casing 9 of frusto conical form flaring upwardly and having a-floor portion 10, and which casing is connected to rotate with the shaft 6.

The material to be extracted is of .course loaded into the basket. the moisture and liquld in said material being thrown outwardly by centrifugal force when the basket is rotated at high speed and being expelled from the material either by moving upwardly over the edge of the inclined wall 9 or through many small openings or perforatlOns provided in the outer basket wall, as is usual. 1n the present construction, the material to be extracted is not loaded directly into the outer casing portion of the basket but into a cage or container therein which is so arranged as to enable the material to be more readily handled. This cage or container also has its outer walls inclined and said walls are provided with closely spaced fine perforations or openings through which the liquids pass outwardly. as will be readily understood. The closely spaced perforations in the walls of the basket are indicated in the drawings throughout a portion of the walls for purposes of illustration. The cage or container comprises a central sleeve. portion 11 having sliding movement on the shaft 6 and provided at its upper end with an outwardly extending collar or flange 12. In an enlarged portion 13 of the sleeve 11 is an annular shoulder 14 adapted to cooperate with one or several depending swinging locking dogs 15 pivoted in brackets on the casing floor 10. When the cage is in position in the casing. as shown in. Fig.

1. rotation of the basket throws the pawls 15 outwardly into locking engagement with the shoulder 14. thereby preventing the inner cage or container from being elevated while the machine is running. To the central sleeve member 11 are connected a series (four being shown) of vertical radiating walls or partitions 16 of proper shape to extend nearly outwardly to the wall 9 of the outer casing member. The upper edges of these partitions form the support for the basket cover 17. Between each two adjacent radially extending partitions is located a receptacle or holder section 18 open at its top and inner sides and of wedge form in plan view, as shown in Fig. 5. Each of the four receptacles is suitably hinged on a horizontal axis'to the outer edge of the floor 19 of the vertically movable cage, such as by being mounted to turn on a shaft 20.

For elevating and lowering the cage or container the machine is provided with a vertically extending screw 21 on which travels a nut (not shown) carried by or forming part of a lifting arm 22. Said arm is provided with guides 23 for a rod 24 having a hook member 25 at its front end'adapted when the rod 24 is moved forwardly to be engaged underneath the'collar 12 of the cage sleeve 11. For so operating the rod the hook member may be provided with an operating arm and handle 26. Screw 21 at its upper end is provided with a beveled gear 27 meshing with two beveled gears 28 on a shaft 29 provided with a sliding clutch member 30 carried by a movable rod 31, and adapted to couple either of the two gears 28 to the driving shaft. Said rod may be operated by a clutch shifting rod actuated by the pivoted lever or handle 33. 34 represents the driving pulley for the shaft 29.

The extractor is operated as follows:

Fig. 4 represents the loading and unloading position. In this position the screw. 21 has been rotated to elevate the work holding cage to its upper position. In this position any one of the several receptacles or holders may be readily pulled out to unloading position as shown at the left, by inserting the hook end of a tool 35 beneath the edge of the cover to engage the upper edge of the receptacle wall. When the receptacle is pulled out it swings down until it rests upon the upper edge of the curb with its formerly vertical outer wall now inclined downwardly and outwardly. The material in the receptacle can be dragged out directly into a basket or other portable container and the receptacle again loaded, after which it may be swung upwardly into its former position. Vhile the cage is in its upper position it may be readily and freely rotated about the shaft to bring any one'of the several receptacles into the front position. \Vith this arrangement the basket may be readily balanced with even a small load because any two opposite receptacles inay be loaded equally and the remaining compartments left empty. if desired. Obviously, any suitable number of receptacles may be utilized. \Vhen the cage is fully loaded the screw 21 is rotated reversely to lower it into the casing 9, cover 17 moving down with the cage. After releasing the hook 25 power may be applied to rotate the basket for the extracting operation.

\Vhat I claim is:-

1. An extractor, comprising-a frame including a stationary curb, and a rotating basket therein, said basket including a series of individual Work holding receptacles movable as a unit to a position outside of said curb, and each of said receptacles being movable outwardly relative to the axis of rotation to unloading position.

2. An extractor, comprising a frame including a. stationary curb and a rotating basket therein, said basket including a series of pivotally mounted individual work holding receptacles, whereby each of said receptacles can be moved to unloading position.

3. An extractor, comprising a frame including a stationary curb, and a rotating basket therein, said basket including a series of individual work holding receptacles, each of said receptacles being mounted to swing about a horizontal axis outwardly to unloading position.

4. An extractor, comprising a frame including a stationary curb. a rotating basket therein, sa-id basket including a series of individual work holding receptacles movable as a unit to a position outside of said curb, and each of said receptacles being movable outwardly relative to the axis of rotation to unloading position, and power means for raising and lowering said receptacles.

5. An extractor, comprising a frame ineluding a stationary curb, a' rotating basket therein, said basket including .a. series of individual work holding receptacles, each of said receptacles being mounted to swing about a horizontal axis outwardly to unloading position, and power-means for raising and lowering said basket.

6. An extractor, comprising a frameincluding a stationary curb, a rotating basket therein. said basket including a. series of individual work holding receptacles each movable outwardly relative to the axis of rotation to unloading position, and power means for raising and lowering said basket, said receptacles in unloading position being supported by the edge of said curb.

' 7. An extractor gomprising a frame in cluding a stationary curb, a rotating basket therein. said basket including a series of individual work holding receptacles, each of said receptacles being mounted to swing about a horizontal axis outwardly to unloading position, and power means for raising and lowering said basket. said receptacles in unloading position being supported by the edge of said curb.

8. An extractor, comprising a frame including a stationary curb. and a rotating basket therein. said basket comprising an outer casing. and a. series of individual. work holding receptacles nesting as a unit within said-casing.

9. An extractor, comprising a frame including a stationary curb. a rotating basket therein, said basket comprising an upwardly and outwardly inclined outer casing, and a series of individual work holding receptacles nesting as a unit within said casing, the outer walls of said receptacles having epproximately the same inclination as that of said casing wall.

10. An extractor, comprising a frame including a stationary curb, a rotating basket therein, said basket comprising an outer casing, a series of individual work holding receptacles nesting within said casing, and means for raising and lowering said receptacles as a unit relative to said casing.

11. An extractor, comprising a frame including a stationary curb, a rotating basket therein, said basket compria'ng an outer casing, a series of individual work holding receptacles nesting within said casing, and means for raising and lowering said receptacles as a unit relative to said casing, each of said receptacles when in its upper position being movable outwardly to an unloading osition.

12. An extractor, comprising a frame including a stationary curb a rotating basket therein, said basket including an outer casing immovable vertically, and an inner cage, rotatable and vertically movable as a unit relative to said casing, said cage including a series of individual work holding receptacles movable outwardly to an unloading position.

13. An extractor, comprising a frame including a stationary curb, a rotating basket therein, said basket including an outer casing immovable vertically, and an inner cage rotatable and vertically movable relative-to said casing, said cage including a series of individual work holding receptacles hinged on a horizontal axis to swing outwardly into unloading position.

In testimony whereof I affix my signature.

SYDNEY PRESTWICH. 

